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HT25C/4P-M12
Diffuse Sensor with Background Suppression, 10-30VDC, 1.2m Range Limit, Red Laser, 640nm, PNP, Light/Dark Switching, M12 4-Pin A-Coded PUR Connector, 15 x 42.7 x 30mm (WHL), Plastic Housing/Lens, ECOLAB, IP67/69K, 25C Series
$238.00$238.00 -
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50139552
Polarized Retroreflective Sensor, 10-30VDC, 12m Range Limit with Reflector TK(S) 100x100, 2 Switching O/P 1: Push-Pull Light PNP/Dark NPN + O/P 2: Push-Pull Dark PNP/Light NPN, 0.1m PUR Cable with M8 Male 4-Pin Connector, ECOLAB, 25C Series
$161.28$161.28 -
$169.00$169.00 -
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HT25C/4P-200-M12
Diffuse Sensor with Background Suppression, 10-30VDC, 1.2m Range Limit, Red Laser, 640nm, PNP, Light/Dark Switching, 0.2m Cable with M12 4-Pin A-Coded PUR Connector, 15 x 42.7 x 30mm (WHL), Plastic Housing/Lens, ECOLAB, IP67/69K, 25C Series
$246.00$246.00 -
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HT25CL1/2N-M12
Diffuse Sensor with Background Suppression, 10-30VDC, 0.005-0.6m Range Limit, Red Laser, 650nm, NPN, Light/Dark Switching, M12 Male 4-Pin A-Coded PUR Connector, 15 x 42.7 x 30mm (HWL), Plastic Housing/Lens, ECOLAB, IP67/69K, 25C Series
$381.00$381.00 -
Leuze
HT25CL1/4P-M12
Diffuse Sensor with Background Suppression, 10-30VDC, 0.005-0.6m Range Limit, Red Laser, 650nm, PNP, Light/Dark Switching, M12 Male 4-Pin A-Coded PUR Connector, 15 x 42.7 x 30mm (WHL), Plastic Housing/Lens, ECOLAB, IP67/69K, 25C Series
$381.00$381.00 -
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PRK25C/4P-M8
Polarized Retroreflective Sensor, 10-30VDC, 0.05-12m Range Limit with Reflector TK(S) 100X100, Red LED, 640nm, PNP, Light/Dark Switching, M8 Male 4-+Pin PUR Connector, 15 x 42.7 x 30mm (WHL), Plastic Housing/Lens, ECOLAB, IP67/69K
$177.00$177.00
Photoelectric sensors detect the distance, absence or presence of an object. These sensors are great for sensing long distances and detecting most materials.
How Does a Photoelectric Sensor Work?
Generally a photoelectric sensor consists of the following:
- Transmitter - emits the light beam
- Receiver - detects the light beam and converts it to an electrical signal
Photoelectric sensors detect changes in the light beam caused by the presence/absence, movement or properties of an object.
Types of Photoelectric Sensors:
- Through-Beam (Thru-Beam)
- Transmitter and receiver are two separate units that are directly opposite of each other. The sensor detects when an objects breaks the light beam
- Great for long distance detection
- Ideal for conveyors, counting or monitoring door openings
- Retroreflective (Reflective Mode)
- Transmitter and receiver are in one housing; light beam is reflected back by a reflector. Detection is triggered when an object breaks the beam.
- Medium range detection and easier to install than a through beam
- Ideal for package detection and pallet positioning
- Diffuse (Proximity Mode)
- The transmitter and receiver in one housing; the sensor detects light reflected directly off the target object (no reflector needed)
- Best for short range applications
- Ideal for detecting objects on assembly lines, verifying presence or checking fill level
- Specialized Types:
- Background Suppression: Can ignore objects beyond a set distance, focuses close range
- Color or Contrast Sensors: Detects specific colors or contrast differences
- Distance Measuring Sensors: Mesaure the distance to an object
Categories Related to Photoelectric Sensors:
- Stack lights - signal towers visually communicate the data or alerts that the photoelectric sensors are generating
- Smart relays - photoelectric sensors provide input signals which can process the data and control outputs
- Pushbuttons and estops - if your sensor detects a fault, an operator can use a pushbutton to reset the system
- HMIs - HMIs can dispay the data from the photoelectric sensor which allows you to monitor processes